[ale] DAT Tape Data Recovery

[Jerry Yu]

try to dd in the 1st block or so(512byte or 1K or more), and try to see 
if any clue. Some commercial archiving tool has its trademark in the 
header or tailer of the archive file they created.

similar to 'tar tvf /dev/st0', for cpio, you use
	cpio -itv < /dev/st0

try skip to next file mark (using non-rewinding device: /dev/nst0 or 
alike)	


On 28 May 2003, Jonathan Glass wrote:

#Good morning.
#
#A researcher walked in this morning and handed me a Fuji Film "DG-90MAA"
#(90Meter tape) and wants the data off of it.  I've tried tar, cpio,
#dump/restore.  Any suggestions on what else to try?  I always backup
#using tar, so my cpio and restore syntax may be wrong, but the fact that
#I'm getting tape read errors from all three commands makes me nervous.
#
#TIA
#
#mt recognizes the tape:
#
## mt status
#SCSI 2 tape drive:
#File number=0, block number=0, partition=0.
#Tape block size 512 bytes. Density code 0x13 (DDS (61000 bpi)).
#Soft error count since last status=0
#General status bits on (45010000):
# BOT WR_PROT ONLINE IM_REP_EN
#
#But tar craps out:
#
## tar -tvf /dev/st0
#tar: /dev/st0: Cannot read: Input/output error
#tar: At beginning of tape, quitting now
#tar: Error is not recoverable: exiting now
#
#So does restore:
#
## restore rf /dev/st0
#restore: Tape read error on first record
#
#And cpio craps out, too.
## cpio  -i  -v  -C  32768  -d  -u  -m  -I  /dev/st0  "*"
#cpio: read error: Input/output error
#-- 
#Jonathan Glass <jonathan.glass at ibb.gatech.edu>
#
#_______________________________________________
#Ale mailing list
#Ale at ale.org
#http://www.ale.org/mailman/listinfo/ale
#

Jerry Yu				+1-404-487-8544 (O)
systems engineer			jerry.yu at voicecom.com
is support, voicecom, llc		www.voicecom.com

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